Machine for grinding cutlery



(No Model.) 11 Sheets-Sheet 1.

W. C. LAMBERT.

MACHINE POR GRINDING GUTLBRY.

. ,Kim/M- (No Model.) Ily Sheets-Sheet 2 W. C. LAMBERT. MACHINE PORGRINDING UUTLERY.

. No. 601,443. 'Patented Mar. 29,1898.

11 Sheets-Sheet 3,

No ModeM W. C. LAMBERT. MACHINE PoR @BINDING GUTLBIIY.

No. 601.443.. Patented Mar. 29, 1898.

(No Model.) 1i sheets-sheet 4.

W. LAMBERT.. MACHINE FR GRINDING CUTLBRY.

No. 601,443. Patented Mar. 29,1898.'

(No Model.) 1l Sheets-Sheet 5.

W. G. LAMBERT.

MACHINE FOR GRINDING CUTLERY. No. 601,443. Patented Mar. 29,1898.

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1l Sheets-Sheet .6. W. C. LAMBERT. MACHINE POR GRINDING GUTLBRY.

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11 Sheets-Shevet 7 L R E L .w Mhu EG N BM Mm A Lm Um .UL E WN I H C A MPatented Mar. 29, 1898.

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MACHINE POR GRINDING GUTLBRY.

Patented Mar. 29,1898.

(No Modelf) (No Model.) 11 sheetssheet 9. r

W. C. LAMBERT. MACHINE PQR GRINDING GUTLERY.,

N0. 601,443. Patented Mar. 29,1898.

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Dru-G AMAN CLM Ihr.

WE N T1 H HU A M (No Model.)

No. 601,443. Patented Mar. 29,1898.

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nu w pm 1% g 11 Sheets-Sheet 11.

(No Model.)

WQ-0. LAMBERT'. MACHINE FOR GRINDING GUTLERY.

Patented Mar. 29,1898.

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lIII

UNITED STATES PATENT- Fries.

VILBUR C. LAMBERT, 0F NEW HAVEN, CONNECTICUT.

MACHINE FOR GRINDING CUTLERY.

SPECIFICATION forming part of Letters Patent No. 601,443, dated March29, 1898.

Application iilecl February 8, 1896. Serial No. 578,470. (No model.)

To a/ZZ whom it may concern,.-

Be it known that I, WILBUR C. LAMBERT, a citizen of the United States,residing at New Haven, county of New Haven, and State of Connecticut,have invented a new and useful Improvement in Machines for GrindingCutlery, of which the following is a specification, reference being hadto the accompanying drawings, forming part thereof.

My invention relates to edge-tool-grinding machinery, and has especialreference to machines for grinding articles of cutlery, such asknife-blades, razors, 85o.; and it has for its object to materiallyincrease the working capacity of such machines and at the same timeimprove the character of the Work done thereby.

To this end my invention consists in the grinding-machine constructedand operating as hereinafter fully described, and particularly pointedout in the claims.

Referring to the drawings, in which like numerals designate like partsin the several views, Figurel is a plan View of a grindingmachineembodying my invention. Fig. 2 is a front elevation thereof. Fig. 3 is arear elevation'thereof. Fig. 4 is an end View with a portion of the bedcut away at the line of Fig. 3. Fig. 5 is a plan view, drawn to a largerscale, of the mechanism located at one end of the machine. Fig. 6 is apartial crosssection thereof, taken at line 'y y of Fig. 5. Fig. 7 is across-section taken at line z z of Fig. 5. Fig. 8 is a detail View ofthe means for adjusting the work-supporting tables toward and away fromthe abrading-wheels. Fig. 9 is a vertical section of the bearings forthe wheel-chucks and their shaft. Fig. 10 is a detail View of theeccentric-engaging arm which vibrates the work being ground. Fig. 11 isa partial longitudinal section thereof, taken on line w w of Fig. 12.Fig. l2 is a plan view of said arm. Fig. 13 is a longitudinal section ofone of the work-clamping devices. Fig. 14. shows the cam-hub thereofdetached. Fig. 15 is a partial View of the clamp-operating lever. Fig.16 is a partial longitudinal section of the reversing-lever for one ofthe work-carriages and the means for locking it in one of its positions.Fig. 17 is a vertical section taken at line o o of Fig. 16. Fig. 1S is alongitudinal section of a' portion of the driving-shaft for thework-carriages, showing the reversing-gears and their sliding sleeve.Fig. 19 is a face view of one of the die-holders for the work. Fig. 2Ois a View in perspective of one 'of the dies. Fig. 21 is a horizontalsection showing the basev of one of the Work-carriages, the. way uponwhich it moves, and the forming depression therein which causes theabrading-wheel to form the beveling-point of the blade. Figs. 22 and 23are respectively a face view and a plan view of a portion of said way,having inserted therein an independent plate containing the forming orshaping recess. Figs. 24, 25, and 26 are respectively a face View, aplan, and an end view of still another modification in which theshaping-recess is located in an adjustable plate mounted on the way.

The numeral 1 designates-the supportingbase of the machine, which willbe provided with suitable legs or feet, as shown, and has its interiorformed into a tank or reservoir for holding water, as is customary ingrinding machinery of this character. Said base supports the bed 2 ofthe machine, which bed at the two ends of the machine is enlarged inarea to form two shallow pans or receptacles for receiving the water fedto lthe abradingwheels, as shown in Figs. 1, 2, and 3, and said panscommunicatewith the reservoir in the base by passages 3 (see Fig. 9) topermit the water to return to the latter after being used in awell-known manner. At the center of the machine the bed 2 supports thestandards 4, in which are located the bearings for the shaft 5, whichcarries the chucks 6 for the annular abrading-wheels 7. I prefer to formthe bearings for said shaft 5 as shown in Fig. 9that is to say, byproviding two hubs 8, which are seated in the standards 4 and areprovided internally with suitable antifriction-linings, as shown,Babbitt metal being preferably used, and are provided at their adjacentends with similar annular bearing-surfaces 9. The shaft 5 passes throughsaid hubs, and between the latter it carries the band-pulley 10, bywhich motion is transmitted to the machine by belt from apower-shaft,said pulley having formed integral therewith the smallerpulley 12 to receive the belt by which the motion of shaft 5 istransmitted to the driving-shaft for the work-carriages,as will bepresently described.

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One end of the hub of'said band-pulleys bears against theannularbearing-ring 9 off one of the hubs 8, and its opposite end isthreaded to receive the nut 13 and lock-nut 14, which latter bearsagainst the bearing-ring of the opposite hub 8. Provision is thus madefor causing the end thrust of shaft in both directions to be taken bythe bearing-rings on said hubs and for compensating for Wear of saidrings bythe adjustment afforded by the two nuts 13 14, so that aperfectly true and steady movement of said shaft and the abradingwheelscarried thereby is assured at all times.

The abrading-wheels 7, carried at the ends of the shaft 5, form rightand left hand Wheels, and upon the bed of the machine at each end of thelatter are located the carriages for the work and their operatingmechanisms. -Said mechanisms are exact duplicates of each other, and thevariousparts thereof are designated by thesame numerals; but toavoidprof liXity I will describe the construction and op.- eration ofthe mechanism at one end of the machine merely,it being understood thatsuch description applies equally well to either'of said duplicatemechanisms. Y

Upnthe bed of the machinev is located a dovetail way 15, (see` Fig. 4,)extending ini` a direction parallel with .the axis of shaft 5 andperpendicular to. the face of the abradi'ngwhee1lupon which way ismounted a. table 16which supports the Work-.carriage and its operatingmechanism. Screw-boltsl', pass,- ing; through the overlapping edge ofsaid table againstian interposed gib, (see Figs. 4and 6,). serve tosecurely' fasten it against movement;- but by loosening said screwsathetable is-rendered freeto have a limited movement toward and awayfrom theface of the abrad'- ingwh.eel, which movement is imparted toit by meansof a' screwfrod 18, revolubly supF ported atthe outer end of the bed,ysaid rod carryinga hand-wheel at its outer end and engaging at its innerend a nut 19 on the table, as shown in Figs. 4 andv 6, the way'1'5'beinglongitudiinally recessedto receive said rod and. nut., Upon saidtable 16 islocated a Way 2,0, extending at aright angle tothe. way

and. parallel with the face of the abrading-` wheel', upon which ismounted the work-carriage 21. Motion isimparted tosaid carriage by ascrew-shaft 22, supported in bearings on table 16, said shaft engaging anut 23, con.- nected to the carriage by a swivelrbolt (see Fig.- 8);toypermit a slight tilting movement of the carriage horizontally, for apurpose which will presently appear.4 Said shaft 22 carries at, one endthe spur-gear 24, and preferably hasits oppositev end reduced and iittedto receive aV w,rench as shown in. Figs; 5 and 'Zto permit they shafttobe operated manually-in adjlistin g the startingpoint of thea traverseof the carriage. Said gear 24 on` the shaft mesheswith a spur-gear25,carriedI by a plate 26, which is dovetailedV into an angle-bar 2.7,boltedto theA under side of theibed, (see-,Fig 7,). screw-bolts 28passing through slots in shown.

said angle-bar into said plate, (see Fig. 2,) serving tosecurely holdthe latter in position, while permitting it to have a limited adjustmentlongitudinally of the machine. The object of such provision foradjustment of plate 26` is to enable the gear 25` to be maintained inits proper working position relatively to gear 24 When the latter isshifted with the :adjustment of table 16, before mentioned..

Rigidly secured to said gear is a bevel-gear 29, which is adapted to beengaged alternately by two oppositely-faced bevel-gears 30 31, carl riedby a sleeve 32, which has a splined con- `,"nection with thedriving-shaft 33, (see Fig.

18,) whereby longitudinal movement of said sleeve to throw either of itsgears into mesh with gear 29 is permitted. Said shaft 33 is supported insuitable bearings upon the plates 26. at the-rear side of the machineand carriesy midway between itsv ends the spurgear 34, (see Fig. 3,)which` gear meshes with a smaller gear 35., mounted upon a shortstandard 36, said gear having connected thereto a band-pulley 3'Z, towhich motion is transmitted by a band 38, passing about the pulley12y onthe wheel-shaft 5. Provision is thus made for imparting motion to theshaft 33, which constantly maintains a uniform relation to that of thewheel-shaft. The gear 31 on sleeve 32 is provided with anannularlygrooved hub which receives the forked end of a reversing-lever39, pivoted upon a vertical stud fon the table 16, the long arm of whichextends. to the front side of the machine and terminates in asuitablehandle, as (See Figs. 1, 5, and 6.) By grasping said handle andswinging the lever the sleeve 32- can be moved to throw either of itsgears intov action and thus reverse `the direction` of movement ofthework-carriage; but I provide means whereby such reversal of movement-issecured automatically, which are as follows:

Tothe side of the Work-carriage are adjustably secured. two tappets 4142 by means of screws passing through slots therein, (see Fig. 6,). andto the edge of table 16 is pivotally hung. an elbow-lever 43, (see Figs.6, 16, and 17,).the long arm of which lever stands in the path of thetappet 42 as the Work-carriage nears the end of its movement in onedirection. rlChe short arm of said lever enters a notch inavertically-disposedpin 44, mounted in a housing 45, secured to thetable, and a IOO IIO

coil-sprin g 46, surrounding said pin Within the saidv lever toward theleft or inj a direction to disengage the gear 3l from gear 29 and; movegear 30 into engagement withthe latter. Pivotally mounted upon the tableis a short lever 48, the short arm of which lies in the pathof tappet 41on the carriage as the latter nears the end of its movement toward thefront side of the machine, and the long arm of which engages the side oflever 89, (see Fig. 5,) a light spring 49 keeping said lever in suchposition. Said lever 48 is of such length that its action upon lever 39will be sufficient to disengage gear 30 from gear 29, but will not movegear 31 into engagement with the latter, the carriage being thus broughtto a rest to permit the insertion of a new blade in the work-holder,after which it is again set in motion by manually shifting the lever tothrow gear 31 into engagement with gear 29. The parts beingin theposition shown in Fig. 5,

' the continued lnovement of the carriage tonally of the` latter.

ward the rear side of the machine will cause its tappet 42 to swinglever 43 and depress pin 44 to release the reversing-lever, whereuponthe spring 47 throws the latter to its opposite position and reversesthe movement of the carriage. )Vlien the carriage nears the end of itsmovement in the opposite direction, its tappet 41 engages lever 48 andgradually moves it and the reversing-lever until the carriage comes to arest. The adjustability of the tappets renders it possible to vary theeX- tent of the traverse to correspond with work of different lengths.

The work-carriage is provided at its edge adjacent to the abrading-wheelwith the two bearings 50, which receive the trunnions 51, projectingfrom the opposite ends of the dieholder 52, (shown detached in Fig. 19,)whereby said die-holder is rendered free to rock upon said tru unions,and the means provided for imparting a positive rocking movement theretoare preferably as follows: A shaft 53, supported in bearings 54 on table16, (see-Fig. 5,) carries at one end a spur-gear 55, which meshes withgear 24, and upon said shaft is mounted an eccentric 56, (see Fig. 11,)which has a spline-and-groove connection with the shaft to permitmovement thereof lon gitudi- The die-holder 52 is provided at one endwith a laterally-projecting arm composed of the two members 57 58, (seeFigs. 10, 11, and 12,) which are connected togethemby the hinge-joint59. The member 58 terminates at its outer end in a fork which embracesthe eccentric 56, and two cap-pieces 59, applied to the sides of saidfork, form aV housing for said eccentric and compel it to movelongitudinally of. shaft 53 with the work-carriage. The member 57 ofsaid arm has its outer end provided with teeth formed on the arc of acircle of which the hinge-joint 59 is the center, and the member 58 isprovided with a shoulder facing said teeth, in which is located asegment of a tapped hole to receive the adjusting-screw 60, whichengages both the thread of said hole and the teeth on the member 57,whereby an adjustment of one member upon the other can be effected byturning said screw to vary the extent of the rocking movement impartedto the die-holder by the eccentric. A set-screw 61, passing through anarc slot in the` member 57 into the member 58, serves to securely fastensaid members together in any of their adj usted positions. Such rockingmovement of the die-holder is for the purpose of securing the slightconvexity transversely of the blade with which knife-blades arefinished, and the described means for adjusting the amount of suchmovement adapts the machine for producing the proper convexity on bladesof varying widths as well as for varying the degree of convexity onblades of the same width.

In its side adjacent to the abrading-wheel the die-holder 52 is providedwith a recess to receive the die-plate 62, (see Figs. 19 and 20,) whichis secured thereto by screws, as shown, or in any convenient manner. hasits acting face provided with a shoulder or rest 63 for supporting theblade and conforming substantially to the shape of the edge of thelatter,as shown in Fig. 20,and is preferably provided with the verticalchannels 64 in its wall above said rest, as shown, which obviate thenecessityof reducing the entire face of said wall to a true plan e, andthereby lessen the cost of manufacture of the die-plate and also serveto permit a portion of the water fed to the wheel during the grindingoperation to escape behind the blade and prevent the latter from beingunduly heated. A series of such dieplates will be used interchangeablyto correspond with blades of varying sizes and shapes. Referring toFigs. 5, 13, 14, and 15, the preferred means for clamping the blade uponsaid die-plate are as follows: At its frontend the die-holder52 isprovided with the laterally-projecting hub 65, through which extends asquared hole to receive the stem 66 of a clamping-jaw 67, the actingface of which opposes the face of the die-plate and is slightly taperedto correspond with the taper of a knife-blade at the butt-end of thelatter, at which point said jaw engages a blade placed on said plate.The stem 66 is made square for a short distance from the jaw, whereby itis prevented from turning within the hole in the die-holder, and is maderound from such point to its outer end, where it is threaded to receivea nut 68 and a lock-nut 69. A collar 70 on said stem is formed with ashoulder end of said collar 70 forms a scroll-cam, (see Fig. 14,) and alever 73 has its hub 74, which embraces the stem between said collar andthe nut 68, provided with a similar cam for- Said die-plate IOO IIO

mation on its end adjacent to said hub, whereby the combined action ofsaid cam-surfaces whenthe lever is moved about the stem as a center inone direction is to force the stem in a direction to carry the jaw 67against the butt of a knife-blade laid against the die-plate andsecurely clamp it in such position. The collar 70 is provided withSpanner-holes, as shown, and by loosening screw 71 and imparting apartial rotation to said collar any wear between the two cam-surfacescan be taken up and the jaw can bev caused to securely hold blades ofvarying thickness upon the die-plate. The position occupied by aknife-blade when clamped upon the die-plate is indicated by broken linesin Figs. 7 and 19.

I also provide means for automatically causing the abrading-wheel tofollow the beveled surface at the point of the blade to the extremepoint of the latter, which are as follows: By reference to Figs. 8 and.2l it will be ob served that the way 20, upon which the workcarriage 2lmoves, is provided in its outer side and near its front end with ashallow recess 75, and that the carriage makes its contact with the wayat that side by means of two screw-pins 76, which are locked in anyposisition of adjustment by meansof lock-nuts 77. In its opposite sidethe carriage is provided with a series of holes in which are locatedcoil-springs 7 8, surrounding pins 79, screwed into said holes, whichsprings bear against the adjacent side of the way 20, thereby drawingthe ends of the pins 76 against the` opposite'side of the way withsufficient forceto cause one of said pins, when it reaches said recess'Z5 as the. carriage approaches the end of its forward movement, toenter said recess and thereby impart to the carriage a slight tiltingmovement horizontally, such movement being allowed by the swivelconnection of the nut 23with the carriage, as hereinbefore mentioned.The recess 75 is so located and is of such conformation that suchtilting movement of the carriage will cause the beveled surface at thepoint of the knifeblade to bear against the face of the abrading-wheeltothe eXtreme point of the blade. As shown in said Figs. 8 and 2l, therecess 75,. instead of being made in the wall of the way itself, ismadein a thin bar of steel S3,

' set into arrecess in the way and securedl in place by screws, suchconstruction enabling said bar tof be hardened to increase its wearingquality and also enabling different bars with differentsizes and shapesof recesses to suit knife-blades of different sizes and shapes to; beused interchangeably. In Figs. 22 and 23 I have shown the recess 7 5 asbeing located in a block .76, which is dovetailed into the way, and inFigs. 24,25, and 26 Ihave shown it as being located in a short bar 7 7,movably inserted within a groove in the way, said bar having its endbent at a right angle to receive an adjusting-screw 78, by means ofwhich said bar can be adjusted to vary the position of the recess tosuit different styles and sizes of blades. In either of said forms thebar or plate containing the lrecess acts as a former to properly finishthe blade at its pointed end.

A rotary pump 7 9 (see Figs. 3 and 4) is mounted at the rear side of themachine for withdrawing the water from the reservoir in the base andfeeding it to the abrading-wheels through suitably-disposed pipes (notshown) in a well-known manner, said pump being driven by a belt 80,connecting a pulley 8l on the pump-shaft with a pulley 82 on shaft 33.

As hereinbefore stated, the mechanism above described for holding andpresenting the work to the abrading-wheel at one end of the machine isduplicated at the opposite end in connection with the oppositewheel,thereby enabling two blades to be Operated upon simultaneously,and the operation of the machine is as follows: The work-carriages 2lbeing at the end of their traverse toward the front side of the machine,two knife-blades are applied to the die-plates thereon and clampedthereon by turning the levers 73. The operator then grasps the twolevers 39 and moves them sufficiently to throw the gears 31 intoengagement with gear 29, said levers being retained in such positionbythe entrance of the pins 44 intothe recess in their under side. Thecarriages are thus caused to move toward the rear side of the machine,carrying the knife-blades transversely across the faces of the annularabrading-wheels, while at the same time the rocking motion imparted tothe die-holders by the eccentrics 56 secure the desired convexitytransversely to the blades. Such action continues until the tappets 42on the. carriages engage the levers 43. and by rocking thelatterwithdraw the pins 44 from the reversing-levers, whereupon thesprings 47 actuate said levers to throw the gears 30 into engagementwith gears 29 and the carriages begin their return movement. Suchmovement continues until the tappets 41 engage the levers 48 andactuatethe reversinglevers to withdraw the gears 30 from gears 29 and thecarriages come to a rest. The operator then removes the blades andtransposes them upon the die-plates and the operationis repeated, thegrinding being performed upon the opposite side of said blades. Asbeforedescribed, the slight tilting movement given to the carriages justbefore they come to rest at the front side of the machine by thedepressions 7 5 secure the desired bevel at the point of the blades.Such operation can go on indefinitely, the only changes in the machinerequired being the substitution of different die-plates for the varyingsizes and styles of blades and the adjustment of the tables 16 and theplates 26, as before described, should such adjustment becomenecessaryto compensate for the wearing away of the face of theabrading-wheels. j

It will be apparent that the machine operating as thus described has acapacity IIO for very rapid work, as well as for grinding blades withentire uniformity upon bot-h sides thereof. l

It will be obvious that the novel means devised by me for holding andpresenting the blade to the abrading-wheel can be used in the mannerherein described in connection with a single abrading-wheel, instead ofbeing duplicated for use with two wheels, without departure from thescope of my invention.

Having thus fully described myinvention, what I claim, and desire tosecure by Letters Patent, is-

1. In a grinding-machine, the combination with an annularabrading-wheel, of a way eX- tending parallel with the acting face ofsaid wheel'and having in one side thereof, near one of its ends,adepression or recess, a workcarriage mounted upon said way and havingmeans for clamping thereon the work to be ground, said carriage beingprovided with inwardly-projecting engaging means near each end whichbear against the recessed side of said way and with a spring or springsbearing against the opposite side of said way, and means, as ascrewshaft, for moving said carriage upon said way, substantially as setforth.

2. In a grinding-machine,an annular grindin g-wheel, a work-carriagemovable in a plane parallel with the acting face of said wheel, awork-holder pivotally supported upon said carriage, a screw-shaftoperatively connected with said carriage for imparting a back-andforthmovement thereto, means substantially as described for imparting arocking movement to said work-holder during the traverse of saidcarriage, and means for causing a slight tilting movement to thecarriage in a horizontal plane as it approaches the end of its movementin one direction, combined and operating substantially as and for thepurpose set forth.

3. In a grinding-machine, the combination with an annular abrading-wheel7, of the table 16 mounted upon way 15, carriage 21 mounted upon the way2O on said table, screwshaft 22 supported in bearings upon said table,said shaft engaging a nut on said carriage and carrying the gear 24 atone end thereof, gears 25 29 mounted upon plate 27 adj ustably securedto the bed of the machine, and screw-rod 18 operatively engaging saidtable for adjusting the same upon said way 15, substantially asdescribed.

4. In a grinding-machine, the combination with an abrading-wheel, as 7,of a work-carriage 21 carrying the adjustable tappets 41 42,reversing-lever 39 operatively connected to the driving-work of saidcarriage for reversing its movement, spring-actuated pin 44 adapted toenter a recess in said lever to retain it in one position, lever 43operatively engaging said pin and having one arm thereof lying in thepath of said tappet 42fon the carriage, lever 4S having one arm thereofin engagement with said lever 39 and its other arm lying in the path ofsaid tappet 4l, and spring 47, arranged and operating substantially asset forth.

5. In a grinding-machine, the combination with an abrading-wheel, as 7,of the workcarriage 21, screw-shaft 22 for operating the same, workholder 52 pivotally supported upon said carriage, shaft 53 carrying thesliding eccentric 56, and an intermediate connection between saideccentric and said workholder whereby the latter receives a rockingmovement from the former, substantially as and for the purposedescribed.

6. In a grinding-machine, the combination with the carriage 21 and itsoperating screwshaft 22, of shaft 53 having mounted thereon the slidingeccentric 56, work-holder 52 pivotally hung upon said carriage andprovided with the laterally-extending arm composed of the members 57 58united by the hinge-joint 59, said member 5S terminating in a fork whichembraces said eccentric 56, and means, as the adj usting-screw 60, foradjusting one of said members upon the other to vary the rockingmovement of said work-holder, substantially as set forth.

7. In a grinding-machine, the combination with the way 20 having in oneside thereof the recess 75, of the work-carriage 2l provided with thepins 76 which bear against the recessed side of said way and with thesprings 78 which bear against the opposite side of said way,substantially as and for the purpose set forth.

8. In a grinding-machine, the combination with the way 20 having securedto one side thereof a removable plate or bar,as 83, containing therecess 75, of the carriage 21 provided with the pins 76 and springs 78as described, and the screw-shaft 22 engaging the swiveled nut 23 onsaid carriage, substantially as described.

9. In agrinding-machine, the combination with the shaft 5 carrying thewheels 7 and band-pulley 10, of the shaft 33 driven by intermediate bandand gearing from said shaft 5 and carrying the splined sleeves 32 uponwhich are mounted the bevel-gears 30 3l, re-

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versing-levers 39 for shifting said sleeves,

forth.

WILBUR C. LAMBERT.' Witnesses:

W. I'I. CHAPMAN, J. E. CHAPMAN.

